Abstract
The dynamics of dissociation of (IF2CCOF) n , (CF3I) n , and (CH3I) n clusters induced by femtosecond UV radiation (λ = 266 nm) is investigated. The method of UV excitation and photoionization probing (λ = 400 nm) combined with the time-of-flight mass spectrometry is applied. It is found that clusters excited to Rydberg states lying below the ionization threshold are decomposed, as a result of subsequent relaxation processes, giving rise to free neutral molecules. A mechanism of electronic–vibrational relaxation process is proposed, and data on the characteristic times of different stages of this process are obtained.
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Original Russian Text © D.G. Poydashev, V.O. Kompanets, V.N. Lokhman, S.V. Chekalin, E.A. Ryabov, 2017, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 152, No. 6, pp. 1213–1221.
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Poydashev, D.G., Kompanets, V.O., Lokhman, V.N. et al. Direct Observation of Ultrafast Dissociation Dynamics of (R–I) n -Type Iodide Clusters as a Result of UV Excitation below the Ionization Threshold. J. Exp. Theor. Phys. 125, 1034–1041 (2017). https://doi.org/10.1134/S1063776117120184
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DOI: https://doi.org/10.1134/S1063776117120184